Home / 2,660.19-3,990.24-1,101.03

Finding the Fourth Proportional to 2,660.19, 3,990.24 and 1,101.03

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Solution

The fourth proportional to 2,660.19, 3,990.24 and 1,101.03 is: 1,651.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.19 : 3,990.24 = 1,101.03 : x
  2. Step 2: Convert to fraction form
    2,660.19/3,990.24 = 1,101.03/x
  3. Step 3: Cross multiply
    2,660.19x = 3,990.24 × 1,101.03
  4. Step 4: Simplify right side
    2,660.19x = 4,393,373.95
  5. Step 5: Solve for x
    x = 4,393,373.95/2,660.19
  6. Step 6: Final answer
    x = 1,651.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.